Adjustable prefabricated concrete well lid

Abstract

The utility model provides an adjustable prefabricated concrete well lid, which belongs to the technical field of well lids and comprises a prefabricated concrete well lid body, a boss is integrally cast and formed at the bottom of the prefabricated concrete well lid body, a plurality of sliding grooves are formed in the side face of the boss, a supporting ring is sleeved on the boss, and a rubber layer is fixedly arranged at the bottom of the supporting ring. The supporting ring is installed in the inspection well, then the fixing disc is pulled according to the depth of the inspection well, the positioning rods are disengaged from the positioning holes, then the positioning sleeves move up and down along the guide rods, the positioning rods are inserted into the different positioning holes, and the effect of adjusting the horizontal height between the positioning sleeves and the bottom of the prefabricated concrete well lid body is achieved. And finally, the boss is inserted into a supporting ring installed in the inspection well, the embedded block is embedded into the sliding groove, the guide rod penetrates through the through hole till the positioning sleeve makes contact with the supporting ring, and it is guaranteed that the horizontal height of the upper surface of the prefabricated concrete well lid body is equal to the horizontal height of the road surface.

Description

Technical Field

[0001] The utility model relates to the technical field of hardness detection, in particular to an adjustable prefabricated concrete manhole cover. Background Art

[0002] Precast concrete manhole cover is a new type of municipal engineering material with a unique formula and production process. It is based on cement, supplemented by high-density steel skeleton, glass fiber, ore, sand and gravel, modifiers and other materials, and is made through specific chemical reactions and molding processes;

[0003] At present, the thickness of prefabricated concrete manhole covers in technology is usually fixed. During the road construction process, the height inside the road is usually higher than the height of the inspection well. The inspection well covers are installed after the road construction is completed. In actual operation, there may be errors in the height of each inspection well from the road surface. When installing the manhole covers, some manhole covers will protrude from the road surface, while others will be sunken in the road surface. This height difference is common. In addition, during the use of the road, the inspection well foundation may be unstable and sink, which will also cause a height difference between the manhole cover and the road surface. When the height difference is too large, It not only affects the normal passage of pedestrians, easily causing problems such as tripping and spraining of ankles, but also causes bumps to the motor and non-motor vehicles passing by. In severe cases, it may cause tire blowouts and the like. In addition, due to the existence of height difference, the passing vehicles will form long-term and high-frequency impacts on the manhole cover during the bumps, which shortens the life of the manhole cover, increases the matching gap with the surrounding of the manhole cover and makes it easy to shake. In severe cases, the manhole cover may even detach from the inspection well when it is impacted, thereby losing the protection of the wellhead, which is very dangerous. Therefore, an adjustable precast concrete manhole cover is designed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the above-mentioned background technology and to propose an adjustable prefabricated concrete manhole cover.

[0005] The technical problem to be solved by the utility model is to provide an adjustable precast concrete manhole cover, which is convenient for adjusting the height of the manhole cover. There is no need to re-adjust the horizontal height of the precast concrete manhole cover body by pouring concrete to inspect the well, thereby increasing work efficiency and having high practicality.

[0006] The utility model provides an adjustable precast concrete manhole cover, comprising: a precast concrete manhole cover body, a boss and a support ring, the bottom of the precast concrete manhole cover body is integrally cast with a boss, the side of the boss is provided with a plurality of slide grooves, the boss is sleeved with a support ring, the bottom of the support ring is fixedly provided with a rubber layer, the inner surface of the support ring is fixedly provided with a plurality of embedded blocks, the upper surface of the embedded block is provided with a through hole in the center, the bottom of the precast concrete manhole cover body is fixedly provided with a plurality of guide rods, the side of the guide rod is provided with a plurality of positioning holes at equal distances, a positioning sleeve is sleeved above the positioning hole, a positioning rod is penetrated on the side of the positioning sleeve, a fixing plate is fixedly provided at the end of the positioning rod, and a sleeve spring is fixedly provided between the fixing plate and the positioning sleeve.

[0007] Preferably, four slide grooves are provided, and the slide grooves penetrate the bottom of the boss.

[0008] Preferably, the angle formed by two adjacent slide grooves is 90°, and the guide rod is located in the slide groove.

[0009] Preferably, the embedding block is matched with the slide groove, and four embedding blocks are provided, and the four embedding blocks all slide in the slide groove.

[0010] Preferably, the guide rod has the same diameter as the through hole, and the guide rod passes through the through hole.

[0011] Preferably, the positioning hole matches the positioning rod, and when the sleeve spring is in a naturally extended state, the positioning rod is embedded in the positioning hole.

[0012] Compared with the prior art, the utility model has at least the following beneficial effects:

[0013] 1. Install the support ring in the inspection well, and then pull the fixing plate according to the depth of the inspection well to make the positioning rod disengage from the positioning hole, and then move the positioning sleeve up and down along the guide rod, and insert the positioning rod into different positioning holes to achieve the effect of adjusting the horizontal height of the positioning sleeve from the bottom of the precast concrete manhole cover body. Finally, insert the boss into the support ring installed in the inspection well, and the embedding block is embedded in the slide groove, and the guide rod passes through the through hole until the positioning sleeve contacts the support ring to ensure that the horizontal height of the upper surface of the precast concrete manhole cover body is equal to the horizontal height of the road surface. When the precast concrete manhole cover body in the inspection well sinks, the horizontal height of the precast concrete manhole cover body can also be adjusted by adjusting the position of the support ring on the guide rod. There is no need to re-adjust the horizontal height of the precast concrete manhole cover body by pouring concrete in the inspection well, which is highly practical.

[0014] 2. The utility model is provided with a rubber layer. When the support ring is installed in the inspection well, the rubber layer cushions the contact between the support ring and the inspection well, thereby preventing the support ring from deforming and the inspection well from being damaged, thereby ensuring the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a three-dimensional schematic diagram of the local structure of the utility model.

[0018] Figure 3 It is a schematic diagram of a top view of the structural section of the support ring of the utility model.

[0019] Figure 4 For this utility model Figure 1 A is an enlarged schematic diagram of the structure.

[0020] Figure 5 For this utility model Figure 4 Enlarged structural diagram at point B.

[0021] [reference numerals]

[0022] 1. Prefabricated concrete manhole cover body; 2. Boss; 201. Slide groove; 3. Support ring; 301. Rubber layer; 302. Embedded block; 303. Through hole; 4. Guide rod; 401. Positioning hole; 402. Positioning sleeve; 403. Positioning rod; 404. Fixed plate; 405. Sleeve spring. DETAILED DESCRIPTION

[0023] Example:

[0024] like Figure 1-Figure 5As shown, an embodiment of the utility model provides an adjustable precast concrete manhole cover, comprising: a precast concrete manhole cover body 1, a boss 2 and a support ring 3, the bottom of the precast concrete manhole cover body 1 is integrally cast with the boss 2, a plurality of slide grooves 201 are provided on the side of the boss 2, a support ring 3 is sleeved on the boss 2, a rubber layer 301 is fixedly provided on the bottom of the support ring 3, a plurality of embedded blocks 302 are fixedly provided on the inner surface of the support ring 3, a through hole 303 is provided in the center of the upper surface of the embedded block 302, a plurality of guide rods 4 are fixedly provided on the bottom of the precast concrete manhole cover body 1, a plurality of positioning holes 401 are equidistantly provided on the side of the guide rod 4, a positioning sleeve 402 is sleeved above the positioning hole 401, a positioning rod 403 is penetrated on the side of the positioning sleeve 402, a fixing plate 404 is fixedly provided on the end of the positioning rod 403, and a sleeve spring 405 is fixedly provided between the fixing plate 404 and the positioning sleeve 402.

[0025] In actual use, the support ring 3 is installed in the inspection well, and then the fixing plate 404 is pulled according to the depth of the inspection well, so that the positioning rod 403 is disengaged from the positioning hole 401, and then the positioning sleeve 402 is moved up and down along the guide rod 4, and the positioning rod 403 is inserted into different positioning holes 401 to achieve the effect of adjusting the horizontal height of the positioning sleeve 402 from the bottom of the precast concrete manhole cover body 1. Finally, the boss 2 is inserted into the support ring 3 installed in the inspection well, and the embedding block 302 is embedded in the slide groove 201, and the guide rod 4 passes through the through hole 303 until the positioning sleeve 402 contacts the support ring 3, ensuring that the horizontal height of the upper surface of the precast concrete manhole cover body 1 is equal to the horizontal height of the road surface, and when the precast concrete manhole cover body 1 in the inspection well settles, the horizontal height of the precast concrete manhole cover body 1 can also be adjusted by adjusting the position of the support ring 3 on the guide rod 4, without the need to adjust the horizontal height of the precast concrete manhole cover body 1 by re-casting the concrete inspection well, which is highly practical.

[0026] By providing the rubber layer 301 , when the support ring 3 is installed in the inspection well, the rubber layer 301 cushions the contact between the support ring 3 and the inspection well, thereby preventing the support ring 3 from being deformed and the inspection well from being damaged, thereby ensuring the service life.

[0027] In this embodiment, four slide grooves 201 are provided, and the slide grooves 201 penetrate the bottom of the boss 2 , so as to facilitate the embedded block 302 on the support ring 3 to escape from the bottom of the slide groove 201 .

[0028] In this embodiment, the angle between two adjacent slide grooves 201 is 90°, and the guide rod 4 is in the slide groove 201 . The guide rod 4 will not affect the lifting and lowering of the support ring 3 along the boss 2 .

[0029] In this embodiment, the embedding block 302 is matched with the slide groove 201 , and there are four embedding blocks 302 , and the four embedding blocks 302 all slide in the slide groove 201 to ensure the stability of the embedding blocks 302 sliding in the slide groove 201 .

[0030] In this embodiment, the diameters of the guide rod 4 and the through hole 303 are the same, and the guide rod 4 passes through the through hole 303 .

[0031] In this embodiment, the positioning hole 401 matches the positioning rod 403 , and when the sleeve spring 405 is in a naturally extended state, the positioning rod 403 is embedded in the positioning hole 401 , so that the positioning rod 403 can be easily inserted into different positioning holes 401 .

[0032] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. An adjustable precast concrete manhole cover, characterized in that: include: A prefabricated concrete manhole cover body (1), a boss (2) and a support ring (3), wherein the bottom of the prefabricated concrete manhole cover body (1) is integrally cast with the boss (2), the side of the boss (2) is provided with a plurality of slide grooves (201), the boss (2) is sleeved with a support ring (3), the bottom of the support ring (3) is fixedly provided with a rubber layer (301), the inner surface of the support ring (3) is fixedly provided with a plurality of embedded blocks (302), the upper surface of the embedded block (302) is provided with a through hole (301) at the center thereof. 3), a plurality of guide rods (4) are fixedly provided at the bottom of the prefabricated concrete manhole cover body (1), a plurality of positioning holes (401) are equidistantly provided on the side of the guide rod (4), a positioning sleeve (402) is sleeved on the top of the positioning hole (401), a positioning rod (403) is penetrated through the side of the positioning sleeve (402), a fixing plate (404) is fixedly provided at the end of the positioning rod (403), and a sleeve spring (405) is fixedly provided between the fixing plate (404) and the positioning sleeve (402).

2. The adjustable precast concrete manhole cover according to claim 1, characterized in that: There are four slide grooves (201), and the slide grooves (201) penetrate the bottom of the boss (2).

3. The adjustable precast concrete manhole cover according to claim 2, characterized in that: The angle formed by two adjacent slide grooves (201) is 90°, and the guide rod (4) is located in the slide groove (201).

4. The adjustable precast concrete manhole cover according to claim 3, characterized in that: The embedding block (302) is matched with the slide groove (201), and there are four embedding blocks (302), and the four embedding blocks (302) all slide in the slide groove (201).

5. The adjustable precast concrete manhole cover according to claim 4, characterized in that: The guide rod (4) has the same diameter as the through hole (303), and the guide rod (4) passes through the through hole (303).

6. The adjustable precast concrete manhole cover according to claim 5, characterized in that: The positioning hole (401) matches the positioning rod (403), and when the sleeve spring (405) is in a naturally extended state, the positioning rod (403) is embedded in the positioning hole (401).

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